<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Changes in GTK+ 3.4: GTK+ 3 Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
<link rel="home" href="index.html" title="GTK+ 3 Reference Manual">
<link rel="up" href="gtk-migrating-3-x-to-y.html" title="Migrating from one GTK+ 3 release to another">
<link rel="prev" href="gtk-migrating-3-x-to-y.html" title="Migrating from one GTK+ 3 release to another">
<link rel="next" href="ch32s03.html" title="Changes in GTK+ 3.6">
<meta name="generator" content="GTK-Doc V1.33.1 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts"></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="gtk-migrating-3-x-to-y.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="gtk-migrating-3-x-to-y.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="ch32s03.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="id-1.6.9.5"></a>Changes in GTK+ 3.4</h2></div></div></div>
<p>
      Scroll events have been separated from button events, and smooth
      scrolling has been added with a separate event mask. Widgets now
      need to have either GDK_SCROLL_MASK or GDK_SMOOTH_SCROLL_MASK in
      their event mask to receive scroll events. In addition, the
      GdkScrollDirection enumeration has gained a new member,
      GDK_SCROLL_SMOOTH, so switch statements will have to be amended
      to cover this case.
    </p>
<p>
      GTK+ now uses &lt;Primary&gt; instead of &lt;Control&gt; in keyboard
      accelerators, for improved cross-platform handling. This should not
      affect applications, unless they parse or create these accelerator
      manually.
    </p>
<p>
      The tacit assumption that the Alt key corresponds to the MOD1
      modifier under X11 is now a hard requirement.
    </p>
<p>
      The beagle search backend for the file chooser has been dropped.
      Tracker is the only supported search backend on Linux now.
    </p>
<p>
      GtkNotebook has been changed to destroy its action widgets when
      it gets destroyed itself. If your application is using action
      widgets in notebooks, you may have to adjust your code to take
      this into account.
    </p>
<p>
      GtkApplication no longer uses the gtk_ mainloop wrappers, so
      it is no longer possible to use <a class="link" href="gtk3-General.html#gtk-main-quit" title="gtk_main_quit ()"><code class="function">gtk_main_quit()</code></a> to stop it.
    </p>
<p>
      The -uninstalled variants of the pkg-config files have been dropped.
    </p>
<p>
      Excessive dependencies have been culled from Requires: lines
      in .pc files. Dependent modules may have to declare dependencies
      that there were getting 'for free' in the past.
    </p>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.33.1</div>
</body>
</html>